DOI: 10.1016/j.foreco.2014.10.013
Scopus记录号: 2-s2.0-84949115635
论文题名: Altered structural development and accelerated succession from intermediate-scale wind disturbance in Quercus stands on the Cumberland Plateau, USA
作者: White S.D. ; Hart J.L. ; Schweitzer C.J. ; Dey D.C.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2015
卷: 336 起始页码: 52
结束页码: 64
语种: 英语
英文关键词: Development
; Disturbance
; Quercus
; Structure
; Succession
; Wind
Scopus关键词: Ecosystems
; Structure (composition)
; Tornadoes
; Wind
; Development
; Disturbance
; Logistic regressions
; Natural disturbance
; Quercus
; Silvicultural practices
; Structural development
; Succession
; Forestry
; community composition
; deciduous tree
; diameter
; forest ecosystem
; heterogeneity
; shade tolerance
; silviculture
; succession
; taxonomy
; tornado
; wind
; Quercus
; Structures
; Wind
; Alabama
; Appalachian Plateau
; Cumberland Plateau
; United States
; Quercus
英文摘要: Natural disturbances play important roles in shaping the structure and composition of all forest ecosystems and can be used to inform silvicultural practices. Canopy disturbances are often classified along a gradient ranging from highly localized, gap-scale events to stand-replacing events. Wind storms such as downbursts, derechos, and low intensity tornadoes typically result in disturbance that would fall near the center of this gradient and result in intermediate-scale disturbances. Despite their frequency and widespread occurrence, relatively little is known about how intermediate-scale disturbances influence stand development and succession. On 20 April 2011, the Sipsey Wilderness in Alabama was affected by an EF1 tornado with accompanying straight-line winds. In the third growing season after the disturbance, stands were sampled in a stratified subjective sampling design to evaluate the effects of intermediate-scale wind disturbance on structural and successional development of Quercus stands. We established 109 0.04ha plots across a gradient of disturbance grouped into three classes, control (considered to represent pre-disturbance conditions using a space-for-time substitution), light, and moderate categories, to examine the effect of the intermediate-scale wind disturbance. Basal area was reduced from 25.7m2ha-1 to 23.7m2ha-1 and 15.3m2ha-1 for light and moderate disturbance classes, respectively. Logistic regression revealed an increasing probability of mortality during wind disturbance with increasing tree diameter. This intermediate-scale disturbance increased intra-stand heterogeneity and altered the developmental pathway. The stands did not structurally resemble one of the four widely accepted stages of stand development. The disturbance also accelerated succession and released shade-tolerant taxa that were established in midstory and understory strata prior the event. © 2014. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/65614
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Geography, University of Alabama, Tuscaloosa, AL, United States; Southern Research Station, USDA Forest Service, Huntsville, AL, United States; Northern Research Station, USDA Forest Service, Columbia, MO, United States
Recommended Citation:
White S.D.,Hart J.L.,Schweitzer C.J.,et al. Altered structural development and accelerated succession from intermediate-scale wind disturbance in Quercus stands on the Cumberland Plateau, USA[J]. Forest Ecology and Management,2015-01-01,336